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<span id="html-hypertext-markup-language-support"></span><h1>20.1. <a class="reference internal" href="#module-html" title="html: Helpers for manipulating HTML."><code class="xref py py-mod docutils literal notranslate"><span class="pre">html</span></code></a> --- HyperText Markup Language support<a class="headerlink" href="#module-html" title="永久链接至标题">¶</a></h1>
<p><strong>Source code:</strong> <a class="reference external" href="https://github.com/python/cpython/tree/3.6/Lib/html/__init__.py">Lib/html/__init__.py</a></p>
<hr class="docutils" />
<p>This module defines utilities to manipulate HTML.</p>
<dl class="function">
<dt id="html.escape">
<code class="descclassname">html.</code><code class="descname">escape</code><span class="sig-paren">(</span><em>s</em>, <em>quote=True</em><span class="sig-paren">)</span><a class="headerlink" href="#html.escape" title="永久链接至目标">¶</a></dt>
<dd><p>Convert the characters <code class="docutils literal notranslate"><span class="pre">&amp;</span></code>, <code class="docutils literal notranslate"><span class="pre">&lt;</span></code> and <code class="docutils literal notranslate"><span class="pre">&gt;</span></code> in string <em>s</em> to HTML-safe
sequences.  Use this if you need to display text that might contain such
characters in HTML.  If the optional flag <em>quote</em> is true, the characters
(<code class="docutils literal notranslate"><span class="pre">&quot;</span></code>) and (<code class="docutils literal notranslate"><span class="pre">'</span></code>) are also translated; this helps for inclusion in an HTML
attribute value delimited by quotes, as in <code class="docutils literal notranslate"><span class="pre">&lt;a</span> <span class="pre">href=&quot;...&quot;&gt;</span></code>.</p>
<div class="versionadded">
<p><span class="versionmodified">3.2 新版功能.</span></p>
</div>
</dd></dl>

<dl class="function">
<dt id="html.unescape">
<code class="descclassname">html.</code><code class="descname">unescape</code><span class="sig-paren">(</span><em>s</em><span class="sig-paren">)</span><a class="headerlink" href="#html.unescape" title="永久链接至目标">¶</a></dt>
<dd><p>Convert all named and numeric character references (e.g. <code class="docutils literal notranslate"><span class="pre">&amp;gt;</span></code>,
<code class="docutils literal notranslate"><span class="pre">&amp;#62;</span></code>, <code class="docutils literal notranslate"><span class="pre">&amp;x3e;</span></code>) in the string <em>s</em> to the corresponding unicode
characters.  This function uses the rules defined by the HTML 5 standard
for both valid and invalid character references, and the <a class="reference internal" href="html.entities.html#html.entities.html5" title="html.entities.html5"><code class="xref py py-data docutils literal notranslate"><span class="pre">list</span> <span class="pre">of</span>
<span class="pre">HTML</span> <span class="pre">5</span> <span class="pre">named</span> <span class="pre">character</span> <span class="pre">references</span></code></a>.</p>
<div class="versionadded">
<p><span class="versionmodified">3.4 新版功能.</span></p>
</div>
</dd></dl>

<hr class="docutils" />
<p>Submodules in the <code class="docutils literal notranslate"><span class="pre">html</span></code> package are:</p>
<ul class="simple">
<li><a class="reference internal" href="html.parser.html#module-html.parser" title="html.parser: A simple parser that can handle HTML and XHTML."><code class="xref py py-mod docutils literal notranslate"><span class="pre">html.parser</span></code></a> -- HTML/XHTML parser with lenient parsing mode</li>
<li><a class="reference internal" href="html.entities.html#module-html.entities" title="html.entities: Definitions of HTML general entities."><code class="xref py py-mod docutils literal notranslate"><span class="pre">html.entities</span></code></a> -- HTML entity definitions</li>
</ul>
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